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A hydraulic torsional pulse impactor for drilling speed increase

An impactor and hydraulic impact technology, applied in the direction of drilling with vibration, can solve the problems of unsatisfactory use effect, only generate circumferential impact force, generate axial impact force, etc. Service life, the effect of improving the ROP

Active Publication Date: 2020-04-14
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the disadvantage that the existing drilling speed-increasing tools can only produce axial impact force or only circumferential impact force, and the use effect is not ideal

Method used

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  • A hydraulic torsional pulse impactor for drilling speed increase
  • A hydraulic torsional pulse impactor for drilling speed increase
  • A hydraulic torsional pulse impactor for drilling speed increase

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Embodiment Construction

[0033] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown, a hydraulic torsional pulse impactor for drilling speed increase includes a suspension outer cylinder 1; a suspension inner cylinder 7 is arranged inside the suspension outer cylinder 1; a hydraulic torsional impact generator 20 is arranged at the upper end of the suspension inner cylinder 7; The pulse generator 25, the hydraulic torsional impact generator 20 includes the inner shunt seat 5, the start commutator 4, the hydraulic impact hammer 3 and the hydraulic impact seat 19, and the hydraulic pulse generator 25 includes the hydraulic cyclone 8, Upper disc valve 9 and lower disc valve 10;

[0034] The suspension inner cylinder 7 can rotate inside the suspension outer cylinder 1. The upper part of the suspension inner cylinder 7 is designed as a hydraulic shock seat 19. The inner wall of the hydraulic shock seat 19 is symmetrica...

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Abstract

The invention relates to the technical field of petroleum drilling, in particular to a hydraulic torsion pulse impactor for drilling acceleration. According to the impactor, a suspension inner drum isarranged in a suspension outer drum, the suspension inner drum can rotate in the suspension outer drum, the upper portion of the suspension inner drum is designed as a hydraulic impact base, two sector-shaped power cavities are symmetrically formed in the inner wall of the hydraulic impact base, multiple second circulation grooves are formed in the outer wall of the hydraulic impact base and communicated with a circulation passage in the side wall of the hydraulic impact base, and a flow diversion pressing cover is connected to the upper end of the hydraulic impact base. A high-frequency torsion impact force is circumferentially supplied to a PDC drill bit, and a pulse impact force is provided axially; therefore, an assistance is provided for breaking rock through the drill bit, the sticky degree of a drilling column is decreased, the mechanical drilling speed is increased, tools are simple in structure, few fragile components are adopted, and the energy of drilling liquid is ingeniously converted into mechanical energy in order to increase the drilling speed and prolong the service life of the drill bit.

Description

Technical field: [0001] The invention relates to the technical field of petroleum drilling, in particular to a hydraulic torsional pulse impactor for increasing drilling speed. Background technique: [0002] In the process of deep and ultra-deep well drilling in oil fields, due to the high compressive and shear strength of formation rocks, the life of conventional roller cone bits is low, and multiple trips are required, which in turn increases the drilling cycle and affects the drilling efficiency. When using a PDC bit, due to the unique cutting principle of the PDC bit, the stick-slip phenomenon often occurs in the drill string, and the drill string twists violently, resulting in rapid wear of the PDC bit, resulting in irregular hole shape, etc., which is likely to cause downhole accidents , and even cause the PDC bit to fail. [0003] At present, a variety of similar tools have been developed for deep well drilling speed and efficiency improvement technologies at home an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/24
CPCE21B7/24
Inventor 霍新朱高磊朱忠伟梁大鹏钟富林庄纯才王西贵商文豪刘立军汪朝宫晓刘平全黄辉建胡可能宋国强张帆张大军王福来王华宇
Owner BC P INC CHINA NAT PETROLEUM CORP
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